The document introduces Scala as an alternative programming language to Java that runs on the Java Virtual Machine, describing it as a statically typed, hybrid object-oriented and functional language that is compatible with Java and has features like type inference, pattern matching, lambdas, and higher-order functions. It also promotes trying out Scala in an interactive REPL and provides links to download the Scala software and IDEs.

1. Introduction to

2. WHO AM I?
• Consultant
• JVM/Java - 7 years
• Scala - 1 year

3. So...
what is
• Alternative lang. on the JVM
• ”scalable language”
• Statically typed
• Hybrid language: OO _and_ functional
• Java compatible

4. Nifty
Language features
• Pure OO
• Concise syntax
• Type inference
• Pattern matching
• Structural types
• Lambdas and Higher order API:s

5. We’re developers!
Show us some
code already!

6. Pure OOis an object
everything

7. SCALA Syntax

8. Semicolon inference

9. Uniform Access Principle

10. Every statement is an expression

11. One line class declarations

12. One line class declarations++

13. Type Inference
The compiler ”— I know your type”

14. Pattern Matching Switch on stereoids
• Match on types
• Deep matching to extract values

15. Lambdas
Functions are objects
type: Hat => String

16. Lambdas Shortify!

17. Higher order APIS
Super-sweet collections
Express what is done, not how!

18. Everything
Is Nestable

19. Structural types
”I want something that quacks like a duck”
ck?
- qua

20. Interactive REPL
Exploratory development

21. I wanna try it!!!
HOW do i get My hands on it?
You need:
A recent JDK - google JDK
Scala: http://www.scala-lang.org
You may also want an IDE:
www.scala-ide.org or http://www.jetbrains.com/idea/

22. Questions?
Slides:
topconf.com / the program page
mail: johan.andren@mejsla.se
twitter: @apnylle